Isn't it fantastic when you've got a standing agreement like that with DPL? I'm really lucky to have something similar, and it's great. Only on LV, I should say - it took five really put-upon DPLs to get through three really short Legamus solos!
As for reading suggestions, I have o so many. Would you rather do projects completely new to the catalogue, or are you okay doing a new version of something LV already have? And forgive me for asking a silly question, but what exactly do you mean by epic? I'll suggest a couple of things and see if one of them goes 'ding ding ding!': a quest narrative, like a lot of Morris's high fantasy or The Lord of the Rings? Or a long poem with multiple cantos (Paradise Lost)? Obviously there is a lot of overlap with those (Homer and Virgil!), but I've heard the term used pretty loosely and I want to be sure I know what you're aiming for. But yeah, I know of more epics than I have time to record, so we can do a deal!
One suggestion I'll throw out there, besides that tempting Ballantyne list Anne came up with, is the Internet Speculative Fiction Database. (
http://www.isfdb.org/cgi-bin/index.cgi) The way it's set up it might not be as easy to browse for LV-able works as to search for specific things, but you could always just go to their website every so often, click on a couple of links and see where serendipity takes you.
And one more question, if you're not buried under all of this already: obviously you like fantasy, but some things sort of bleed into other genres. How do you feel about science fiction, weird fiction or horror?